Kunis and Kutcher's former '70s Show costar Laura Prepon, who played Donna Pinciotti in the long-running Fox sitcom, told Us Weekly over the weekend what she thought about the pair's love connection.

"We grew up together, you know," Orange is the New Black star Prepon, 34, told Us at the 25th Annual GLAAD Media Awards in NYC on Saturday, May 3, adding that she saw the expectant parents just three months ago. "It makes sense."

Kunis, 30, who played the love interest of Kutcher's character Michael Kelso on the show, began filming the smash when she was just 14 years old. Kutcher, 36, was 20 at the time.

Prepon isn't the only '70s Show alum who has expressed support of the duo. "That's the thing about the cast of the show. We're best friends, everyone," Wilmer Valderrama told Yahoo's Daily Shot, when asked about the pair. He went on to add that cast breakups weren't a part of the show because "we understood the opportunity we had was a very rare one."

Debra Jo Rupp, who played Kitty Forman, chimed in as well, saying that she was surprised that Kunis and Kutcher were in a relationship. She elaborated, "They worked together for eight years. What happened in those eight years? Yeah, I was very surprised, but I think they're really good together. Mila grew up on the show, you know and Ashton is a goofball. I mean, they're just kind of perfect, I think."